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marcan42's profile
Hector Martin
Hector Martin
Hector Martin
@marcan42

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Hector Martin

@marcan42

If it ain't broke, I'll fix it! I'm porting Linux to Apple Silicon Macs at @AsahiLinux. http://patreon.com/marcan  | http://github.com/sponsors/marcan 

Tokyo, Japan
marcan.st
Joined May 2009

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    1. Hector Martin‏ @marcan42 9 Nov 2017
      • Report Tweet
      • Report NetzDG Violation

      So now I reduced my kernel .config that crashes the Go test down to the point where it boots in 1s and doesn't even support PCI. Build the kernel with GCC 6.4.0, Go crashes. 5.4.0, no crash. But I also have *another* full .config that doesn't crash with 6.4.0. The plot thickens.

      3 replies 2 retweets 16 likes
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    2. Srdjan Rosic‏ @srdjanrosic 9 Nov 2017
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      Replying to @marcan42

      Is this on bare metal or qemu/KVM/xen/.. or some such thing?

      1 reply 0 retweets 0 likes
    3. Hector Martin‏ @marcan42 9 Nov 2017
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      Replying to @srdjanrosic

      qemu, thankfully. I found the original problem on bare metal but thankfully it reproduces on qemu (and the host kernel doesn't seem to matter).

      1 reply 0 retweets 2 likes
    4. Anisse‏ @Aissn 9 Nov 2017
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      Replying to @marcan42 @srdjanrosic

      Nice. It's almost too easy, since now you can automate bisects/config bisects (with ktest or your own scripts).

      1 reply 0 retweets 1 like
    5. Anisse‏ @Aissn 9 Nov 2017
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      Replying to @Aissn @marcan42 @srdjanrosic

      You could with bare metal as well, but then it needs a power switch or similar.

      1 reply 0 retweets 0 likes
      Hector Martin‏ @marcan42 9 Nov 2017
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      Replying to @Aissn @srdjanrosic

      It also would take longer than the 1 second it takes for qemu to boot the kernel all the way to userspace.

      4:48 AM - 9 Nov 2017
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      • Anisse S҉ T҉
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